Electric pocket-lamp.



y E. NEUDD RFFER.

ELECTRIC POCKET LAMP. APPLICATION FILED JULY 6, 1911. v

Pal ten ted Sept. 30, 1913.

r 3 SHEETS-SHEET 1;,

KNEUDfiRFPER.

ELECTRIC POCKET LAMP.

APPLICATION FILED JULYB, 1911. 375 Patented Sept. '30, 1913.

3 SHEETS'SHEET 2.

- E. NEUDD'RFFER. ELECTRIC POCKET LAMP. APPLICATION FILED JULY 6, 1911.

1 074,376. Patented Sept. 30, 1913.

3 SHEETESHEBT 3.

EMIL NEUDfiRFFER. OF STUTTGART, GERMANY.

ELECTRIC POCKET-LAMP.

Specification of Letter-{Patent Patented Sept. 30, 1913.

Application filed July 6, 1911. Serial No. 637,169.

To aZZ whom it may concern Be it known that I, EMIL Nnuntjnrrnn, a

citizen of the German Empire, residing at Stuttgart, in the Kingdom ofVurttemberg,

Germany, have invented certain new and useful Improvements in ElectricPocket- Lamps; and I do hereby declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it a'ppertains to make and use thesame.

T invention relates to an improved electricpocketlamp; and theimprovement consists substantially in case of the lamp being made of twodished parts, the edges of whichengage one over the other and may beturned relatively to one another, whereby a contact is closed andopened. 7

By the use of two dished parts the manufacture of the case is greatlysimplified, and by the edges being guided one upon the other, that is tosay by engaging over one another, considerable strength or rigidity isobtained, and hinges are also entirely dispensed with; One dish or cupis'provided with a ring and stem'like those of a watch, while the otherdish has a recesswith which it engages around the stem of the ring, therecess also having a spring action and serving as an abutment or stopgorlimiting the turning movement of the lshes. One dish also carries acontact stud, which when the dish is turned depresses the contact studand thereby permanently closes the circuit.

The contact may also be arranged in the stem of the ring and be keptcontinuously engaged by means of an angular guide slot or the like.Several contacts may also be employed which, separately or together,make and break the circuit by turning the dishes separately or together,or a shifting device may be provided by which the turning to right orleft may be effected more or less. The contact may also be disposed insuch a way that it is not capable of being reached from the outside, sothatany un I authorized burning of the pocket lamp, which is notimpossible in the case of lamps with external. contacts, is entirelyprevented. This may beattained by one of the dishes having'an inwardlydirected; tongue, stop or the like, which projectsthrou h a slot,

recess or the like in the other dis and lies in the path of a contactpiecefsj'o that when the dishes are turned the tongue moves in the slotand thus encounters the contact piece, whereby the circuit is closed.fTllQ inwardly directed tongue may also be pro vided, without a guideslot, in which case the tongue must be arranged on the inner dish.ljinall'y, a battery is provided which is particularly characterized byits simple manufacture and its c'onvenient and certain operation. Thisbattery substantially con sists of separate cells or elements preferablyof rectangular/form, the ends of which are roof-shaped. By having thisform the cells adapt themselvesexactly to the walls of the case wherebyconsiderably larger metal surfaces are obtained than in the case ofcells of the ordinary cylindrical form and are also much cheaper tomake. Any suitable number of separate cells may of course be used andthe cells maybe arranged into one, two or more batteries, severalcontacts being also provided, so that either one or other of thebatteries or several of them may be used together. The separate cellsare held togetherby a frame or the like, so that they form a whole andthe frame may be of suitable form, thus, for instance, it may consist ofa holder or have a U-shaped form in form. The connection of the framewith the cells may be made by means of a wrapping or be any suitableone.

- The incandescentlam socket is shaped'in such a way that a pro ongationforms the reflector which has a flange which serves for holding thebattery, and in order to always obtain-the correct position of thebattery the flange for holding the battery is provided at one or moreplaces'with a spe' cial beveling or with a projection, cam or the like,and the battery is shaped in such a way at a suitable placethat thebattery can only be inserted in the case in a given position, whereby acorrect position of the poles is. insured and the battery can also beinsertedby a person who is not an expert.

In order to allow. of the battery being removed it necessary, it isprovided with means for lifting'it, which preferably consists of ahandle in the form of a band.

which the cells 1ie,'the open side of the The invention will now be'moreparticularly described in connection with some forms ofconstruction by way of example in the accompanying drawings. Figure 1.is a front view of the improved pocket lamp; and Fig. 2, a similar viewwith the cover removed; Fig. 3, a plan view, with the'stem of thering'insection; Fig. 4, a

side view in section; Fig. 5, a view of the holder for the incandescentbulb; and Fig. 6, a battery; Figs. 7 to 10 are sections of the batteryshowing various forms of construction; Fig. 11 is a partial front view;and Fig. 12, a plan view of 'the arrangement with several contacts; Fi13 is another form of construction of t e battery; Fig. 14 is a partialside View; and Fig. 15, a partial sectional front view of thearrangement of the contact in the stem of the ring; Figs. 16. and 17 arefront views partially in section has a recess 6 in order to engagearound the stem f and also to give a springy action to the dish a. i

A contact stud g is provided for closing the circuit, which stud-passesthrough the edges of the two dishes a b, so that when the contact g is'depressed the circuit is closed? -In order, however, automatically tokeep the circuit continuously closed, it is only necessary to turn thedishes or and 6, whereby the 'edge of the dish engages over the contactstud g and holds itthereby in a depressed condition. The turningmovement is also limited by the slot (2. Several contacts may also beprovided, as shown, for instance, in Figs. 11 and 12, whereby, byturning the dishes a and b, the contacts and It may be depressedseparately or together whereby the circuits are switched on or oil orchanged separately or together. One of the apertures in the rimvo of thedish a is also elongated, so that a slot 5 is formed with the object ofenabling the contacts g and h to operate correctly.

As shown in Fig. 16,,the contact is placed internally, so that it isfullyprotected. The contact here consists of an inwardly directed tonguew which is preferably out out of the dish a and the ton through a slot02 of the other dish 6 serving as guide and abutment. The slot :1: isbent at an angle and has an entrance 3 in order construction of theframe.

The dish b is provided with a ring d, while the dish ague 10 whichpassesto enable the tongue w to be inserted (Figs. .18 and 19) When thedishes are turned, the tongue w encounters the contact piece 2, and thecircuit is closed} By the use, of an open slot, the dish also has aspring action,

whereby a more certain holding together of the two dishes is obtained.Instead of passing the tongue w through the slot as, the tongue may alsobe arranged on the inner dish, so that the slot is dispensed with, theturning being then limited by the recess 6.

Cells k are employed as batteries, which cells'have a rectan ular formand which are shaped at one end% m is employed, which, for instance,rests on the inner faces of the cells 7: (Figs. 6 and 7) or severalframes at ma be employed, which embrace the inner an outer faces of thecells is (Fig. 8). i

As shown in Fig. '9, the battery lies in a U-shaped frame n which may becovered above, while Fig. 10 shows another form of V In this the frames0 are arranged above and beneath the cells is. The frames n, m and 0 areconnected in any suitable way with the battery,

around them. The battery is preferably provided with a means for liftingit'p, for

like a roof. In order to hold the elements or cells is together, a framefor instance by wrapping a band or the like instance a band serving as ahandle, in order to enable the battery to be easily removed .(Fig. 2)..The incandescent lam) holder 1 is also formed; as a reflector 1', analso has a flanged edge a 'which serves as holder for the battery,and,-in order to insert this latter in a correct ition in the case, theflanged edge a is milled or provided with a projection at one or moreplaces t, while the-battery has a corresponding form which only allowsof the battery being inserted when it is in a correct position, wherebythe poles always lie in the right position.-

Any suitable number of cells I; may .be employed and they may bearranged relatively to one another in such a way that several batteriesare formed (Fig. 13), which are necessary when several contacts 9 and/ Lare constitute flanged disks, and that the contacts are respectivelymounted on said disks. The disks are capable of a limited oscillatorymovement to control said contacts' ,used. It will be noted that the cupsa and b I Instead of arranging the contact as shown in Figs. 1*to 3, thecontact knob 9 may also 15). If in this case, for instance, the contactis to be kept continuously inaction, it is' 1-20 be arranged in the ringstem (Figs. 14and v .I declare that what I' claim is:

1: In a portable pocket-lamp having a battery, two opposed membersforming a battery casing and connected with each other for relativerotary movements, and battery contacts respectively. mounted'eccentricallyon said members and adapted to be engaged and disengagedby movements of said members. i

2. In a portable pocket lamp "havingan electric battery, two flangeddisks forming a battery casing and being connected with each other for arelatively rotary movement,

and battery contacts respectively mounted eccentrically on said disksand controlled by said rotary movement.

3. In aportable pocket lamp having an jelectric battery, two flangeddisks forming ment with their adjoining flanges, and capable of 'aliquid relative oscillatory movement, and. battery contacts respectivelymounted eccentrically on and controlled b said oscillatory movement.-

6. In a portable pocket lamp having an electric battery, twoperipherally flanged relatively oscillatory members constituting abattery caspg, and being in frictional en gagem'ent their adjoiningflanges, a recess' on one member, and a stem onthe other memberconstituting means for limiting the movements ,of the said members, andbatteryconta'cts controlled by the said movements.

.7. In. a. portable pocket lamp having an electric battery, twoperipherally, flanged relatively rotary members constituting abattery-casing, and being in frictional engagement with their flanges, abattery contact on one member .projectingthrough the flange .ot

the other member, a slot in the said other flange surrounding the saidcontact, and a seCOnd contact adapted to be brought intc engagement withthe first contact by the rotary movement of said members.

8. In a portable pocket lamp having an electric battery, twoperipherally flanged relatively rotary members constituting a batterycasing, and bein in frictional engagement with their a joining flanges;a

battery contact on one member projecting through the other flange, alaterally open slot in the said other flange surrounding the: saidcontact, and a second contact adapted to be brought into engagement withthe first contact by the s'aid'rotary movement.

9. In a portablepocket lamp having an electric battery, two peripherallyflanged relatively rotar members constitutinga'battery 'caslng an beingin frictional contact with their adjoining flanges, a batterycontact onone member projectin through the other .flange, a slot in the sai otherflange surrounding the said contact, a recess on one flange, and a stemon the other flange consti tuting means for limiting the said rotarymovement, and a second contact adapted to cooperatewith the firstcontact at the end of the said rotar movement.

10. In a porta 1e pocket lamp having an electric battery, 'twoperipherally flanged relatively rotary members constituting abattery-casing and being in frictional engagement with their adjoiningflanges, a battery contact adapted to be moved into andmaintained in itsoperative position by the said rotary movement, and a second contactadapted to cooperate with the first contact.

11. Ina portable'pocket lamp having an electric battery,- twoperipherally flanged relatively rotary members constituting a casing forthe said battery, and being in frietional engagement with theiradjoining flan ges', a manually operable battery contact projectingthrough both flanges, and adapted to be moved into and maintained in its100 operative position by the one flange at the said rotary movement,and a second contact adapted to cotiperate with the first contact.

12. In. a portable pocket lamp having an electric battery, twoperipherally flanged 5 relatively rotary members constituting a casingfor the said battery and being in frictional engagement with their"adjoining flanges, means for limiting the said rotary movement, amanually operable battery contactprojecting through both flanges and'adapted to be moved into and maintained in its operative position by theone flange at the end of the saidrotary movement, and a second contactadapted to cooperate with the .115 first contact.

13. In a portable pocket lamp having an electric battery, twoperipherally flanged relatively rotary members constituting a casing forthe said battery and being in friov other fora relative rotar said cellsand controlled by the said members.

16. In a portable pocket lamp, the comb nation with a casingcomprisingtwo peripherally flanged members connected with each other fora relative rotary movement, of a lamp carrier having a polygonalperiphery, a plurality of electric cells engaging the sides of saidperiphery, and fitting the said casing with their outer ends, andcontacts on the said cells controlled by the said'membersa 17. In aportable pocket lamp, the combination with a casing comprising twoperipherally flanged members connected with each other for a relativerotary movement, of a lamp. carrier having a polygonal periphery, aplurality of cells engaging the sides of and forming a seat for the saidlamp carrier, circular ends on the said cells fitting the said casing,and'f contacts on the said 'cells controlled by the said members.

18. In a port-able pocket lamp, the combi-' nation with a casincomprising two peripherally flanged members connected with each otherfor a. relative rotary movement, of a rier, to; properly fitting thesaid casing, a carrying frame for the said cells, and contacts on thesaid cells controlled by the said members.

19,. A portable pocket lamp comprising a casing, a lamp-carrier havingan irregular polygonal periphery, an electric battery fitting the casingwith its outer )eriphery, and a central aperture in the said batteryconforming to the shape of, the said lamp-carposition said car ierrelative to said battery.

' 20. A portable pocket lamp comprising a casing, a lamp-carrier havingan irregular polygonal periphery, an electric battery fitting thecas'ing with its outer periphery, and a corresponding polygonal centralaperture in the said battery, forming a seat for the said lamp-carrier,to properly position said carrier relative to said battery.

' 21. A portable pocket lamp, comprising a circular casing, a lampcarrier having an irregular polyonal periphery, an electric batterycircu arly shaped on its outer edge, and fitting the said casing, and acorresponding polygonal central aperture in the said battery formingaseat for the said carrier, to

properly position said carrier relative to said battery.

In testimony whereof I aitix my signature, in presence of two witnesses.

EMIL NEUDoRFFnn.

Witnesses:

KARL THEADOR JASPER, Gnono Josnrn HANSELMANN.

